A simple browser-based toolkit for crypto and audio tasks

CryptoWave is a browser-based toolkit that lets you perform common crypto and audio tasks without installing anything or sending data to a server.

It includes tools for AES encryption, RSA operations, hashing, encoding, and even audio conversion powered by FFmpeg.wasm — all running entirely in the browser.

One of the interesting aspects of this project is that everything is client-side. It uses the Web Crypto API for cryptographic operations and WebAssembly (FFmpeg.wasm) for media processing, which means your data stays local.

The goal is to make these tools fast, simple, and accessible, especially for developers who just need something quick without switching between multiple services.

It’s also a good example of how far modern browsers can go without a backend.